Which of the following polyatomic ions has the least atoms per ...

[lak]

Which of the following polyatomic ions has the least atoms per formula unit?
 
  A) ammonium
  B) carbonate
  C) dihydrogen phosphate
  D) acetate

Question 2

The action of some commercial drain cleaners is based on the following reaction:
 
  2 NaOH(s) + 2 Al(s) + 6 H2O(l)  2 NaAl(OH)4(s) + 3 H2(g)
 
  What is the volume of H2 gas formed at STP when 6.32 g of Al reacts with excess NaOH?
  A) 3.50 L
  B) 5.25 L
  C) 7.87 L
  D) 8.59 L

Question 3

Which chemical symbol represents a metalloid?
 
  A) Al
  B) B
  C) Ga
  D) Zn
  E) Ar

[Missbam101]

Answer to Question 1

B

Answer to Question 2

C

Answer to Question 3

B

[lak]

Wow, this really help

[LVPMS]

Excellent